Edwakd m



' To ALnwHour 1r MAY concurrir;-

i new and useful improvements on Rock-Drilling Machines,

. drills yz'," arranged to Acapable of being uncoupled, with thepiston-rod of the d @eine grens ewfiffi' EDWARD n; TROTH, orv NEW Yoan,N.. fr. Leners zwem No. 66,422', ma my 2, 1867. r

turnover` BooK-nurture nieuwe @in ,Stlgchule nin-nt In in first rftstiet@anni nur mating part nf 11n smic.

Be it known that Il, EDWARD MfTno'rH, of the city, county, and State ofNew York, haveinvented certain description, reference being had to the`accompanying drawings, which- 'Y i u Figure 1 represents a rockdrillingmachine, my improvement.

Figure 2, a longitudinal vertical Figure 3, a face view of a combiFigure 4, a rear view of the framel or backend portion ther-eo `Figure5, a front view of the same; and v Figure 6, a view of one of thelocking eccentrics for holding and adj Similar letters of referenceindicate corresponding parts.

The nature of mylinventicn consists, firstly, in a. novel combination,in the one machine, of independent engin'es for drilling and ramming orsplitting the rock by or through a combined drill-holer and ram; also ina certain combination of .sliding-box, rotating-tube and ram ordrill-holder, and of cushions to reduce'jar and prevent injury;likewise, in connection with said tube, ci" anoperating-wheel to thelatter, and attachment, raubdriving engine; and, furthermore, in a.novel comtheir picking action, -machinaot eccentric as arranged fortunnelling purposes, `constructed accordingto section of the same, withthe drills or cutt ned ram `and drillihead or holder.

ers remoyed.

nsti-ng the machine in the tunnel.

gea-r for or" throw cf the ram `.a11291.'.1alstly, bearing-wheels orrollers, for adjusting and holding the machineV to its work. Referringto the accompanying drawing, A represent-s the front and B the mainframe, of spider form or construction, the connecting sidesor beams, andl) longitudinal tierods or braces uniting theend portions or frames A B.Carried by the rearportion or frame B arctwo steam-cylinders E lf,provided with valve-boxes G H, containing ordinary or any suitablevalves for controlling the motion ot' reciprocating pistons within saidcylinders,` of different strokes, the centrally arranged cylinder Ehaving a piston of comparative long stroke, stroke. These twoarrangements form what m'ay be termed separate., engines, to work theVdrills or, cutters, or feed the machine along t be made hollow, and isdetachable coupling, a, propelling it forward to the backend frames orportions of 4the shorter-stroked one serving while the longer-strokedengine answersy to drive the ram, and it may be Vto adjust he tunnel. Iis the pistonrod of this c'entralor ramniing` cylinder; This rod mayarranged to fit withina cylindrical sleeveor tube` J, with which it maybe geared byia so as to reciprocate said tube, `the rod lfittingagainsta shoulder, 6, of the tube when ram. This gear of the said tube, whichis provided lwith a longitudinal slot or groove, c, to allow of itssliding through yet rotating in connection with a worm-wheel, K, bymeans of `a feather'in or 'to said wheel. The wheel K is u'restrainedfrom movement along with or in fdirection of the length of the tube J',bjr-its being hung to turn withina iixed bearing formed on or in acrossbraced, uniting the side beams Cof the frame... This tube J, afterpassing through the wheel K, is extended frontwards so as to projectwithin and through,- in a lengthwise direction, a

longitudinally sliding box, frame A through which 'it passes, travel. Inthe ends of this box turning in the yfront lend on or being supported-by rollers e e, to facilitate its tube J` to -rotate in, but which tubeis restrained by v M, of' suitable form and size relatively clearanceand aiiord other requisite facilities, such holder not merely carryingthe Vproject from it in front, as iliesired, to efe-'ct the out or cuts,but also being Vprovided or studded with :jamming blocks J, for, afterthe drills have done their Work, action on wedges inserted in the outsto, by using the holder M as a ram, splitand detach the cut rock. Thisramming action is produced by the piston of the cylinder acting throughi i to" the frame to establish the rodI, coupling a, tube J, andsliding-box L, the cushions 7: h, both i of which` the following is afull, clear, and exact forming part of this specification, and in `whilethe-latterly arranged cyli'n'derF has a piston of comparatively shortrod I anditube J should be such as to admitof the rotationoi` i ramuiingaction-of the holder M and picking stroke of the drills, yas hereinafterexplained, ggfving, by arrangement at opposite ends ofthe drivingjunction of thetube J Iand box L, to much more eectually itjar, andprevent' the injurious eiieets of concussion than does a spring-orcushion at one end only. For ,g the rock, the coupling a may be detachedto prevent unnecessary working of the renaming engine, the .-rod I ofwhich will then remain .stationary'and simply servo as a guide, or maydo iso, to the tube J. station of the drill-holder M andpicking actionci' the drills is or are effected by the engine, of which he cylinder,the piston-rod 7c of which gives, through a pitman, 1, rotary motion toa crank, m, of a shaft, `rying a pinion, o, gearing into 4a wheehp, hungon la shaft, q, which carries a screw, N, that in rotating i thcwormfwheel K; This gives rotary motion, by the feathered gear of thewheel K withit, to the l, and consequently to the drill-holder M, withits drills i', which -actionmay be `exclusively used where only isneeded. To give, however, to the drills their reciprocating or pickingstroke, in addition to their v ring one-with the holder M, the followingmeans yare or may bejresorted'tc 0n the engine shaft u is a reel thatcarriesl an ecccntrically arranged slide, adjustable by screwsvr, tovary the throw, and which, in O, to give motion to a rocking-lever, l?,hung on a cross-shaft, c, supported This cross-shaft carries arms orlcvers't, rconnected at their outer ends by which they are pivoted as atu, Suid frame locking when down,- or in iosition represented forit infigs. l and 2, with a screw-box., R, whichiits a groove win thesliding-box L, ias passing through or 'gearingwith it a sbrew, S,carried by 'said sliding-box, "By this means, it will be ived,`is a'reciprocating or'picking stroke. given 'to the drills as they areVrotated by the` holder M. To .'e to the same its or theirfeeding-stroke, to give to the cut in the rock its necessary depthbefore applying vedges and ram, the revolving-tube J is gearedby wheelsand pinions :c y z a. with the screw S, which, in ing withinthe'screw-box R, draws along with it the slidingbox L and tube J, withthe drill-holder and its s. To run bach the drills, supposing the tube Jto be disconnected from theram operatingpiston-rod I, by detachment asdescribed oi"the coupling a, .the pinion z may be unshipped und thescrew S and drills run by rotating the screw in a reverse directionthrough, it ,may be, a piniombf, operated by any suitable means. When itis required to apply the ram, the coupling a is zie-established,drilling eng-ine stopped, drills rcmovfr=`, clutch-box Q thrown up orback out of gear with the screw-box R, which, with the screw S,sliding-frame nd tube J, are then free to move in\a straight line orlines by the forward stroke of the piston-rod l, ,to the requisite quickand powerful stroke, under the iniluence of the ramming engine, tol theholder or rain nd ramming blocks j to act upon the wedges to split andbreak the cut or drilled rocl'r, a number ofsuch ming strokes beinggiven in quick succession. Though the drilling and ramming'powers arethus, as itwcre, Lnct, and under the control of independent valves, theyare in a. measure connected for separate action, in varied waysdescribed on the same device, drillholder, or ram M, for performance ofthe work, and both ers may derive their supply of steam, air, or otherpropelling agent lfrom u boiler or reservoir in the rear mon to both.Thevalve of the ramming engine muy he regulated by hand to adjust theblowcr ramming he, while the valve of the drilling engine may beoperated automatically by an eccentric', c', on the engine-shaft :1deccentric rod cl,.the force or throw of the'pickiiig stroke oi' thedrills being, ns before observed, reguid by an adjustable eccentricdriving-slide on the wheel Y. By means of 'the coupling a andclutch-'box or ne Q, not only are the several motions previouslydescribed produced, without interference the one with the er, but theindependenceA pf the drilling and ramming'powers fully securedrand thedragging of dead-weight ided, as in the case of detaching the couplinga, whereby the ramming piston is allowed to remain stationary 'ingthepicking' and rotating actions of the drills; To adjustthe machine to itsproper positiom'and hold it n or steady in the tunnel for theperformance of its work, the lower arms or legs of the spider-frames Aand tre provided with roghened or milled-edged eccentrics or rollers V,hung on eccentric bearings, and operated rods or handles e. By theseeccentrics'V and wedges, applied between -the rock and outer ends of theupper of said frames A B, may thelmachine not only be readily adjustedand securely held for drilling d ramming, but every facilityafforded,'by merely slackening the eccentrics and removing thewedges, tomore i whole machine bodily forward in thetunnel, to follow up the work,and which may he done by wedging, utedges, the holder or ram M in orlagainst the rock and applying steam, supposing, such to he thepropelling ent, to the cylinder E or piston therein.

What I claim as my invention, and des l. The combination, in the onemachine, lder and ram,substantially as spcciiied.

2. The combination of the sliding-box herein set forth.

The cushions h, when applied at or near oppo 4. The combination'bf thewheel K, tube J, and` piston gather, as herein-set fortln 5. Thecombination, her eqnirolent'gear, whereby the feed of the drills isestablished, a short picking action given to the same, el'

distinct ramrning stroke or action produced, essentially as specified.

5. '.lhe application to the frames A and B of the ecccntrics V,substantially as and for the purposes,

escribed.

' EDWARD M. TBOTH.

ing, serves, through apitman, e side beams C of vthe frame. u to a freeframe or clutchbox, AQ, to

ns or legs ire to secure by Letters Patent, is-d of separate engines forindependent action of a combined diill- L, rotating tube J, and ram ordrill-holder M, for operation together,

site ends ofthe sliding-box L, substantially as specified.

rod I, provided with a coupling a, foroperatifon Witnesses i Si'. "W.Goonies, S W. llano.

with the slidngdiox L, of the screw S, screw-box R, and clutch-box orframe (l, .,c

